9867872 has 24 divisors (see below), whose sum is σ = 22203216. Its totient is φ = 4228992.

The previous prime is 9867853. The next prime is 9867883. The reversal of 9867872 is 2787689.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21803 + ... + 22250.

It is an arithmetic number, because the mean of its divisors is an integer number (925134).

Almost surely, 2^9867872 is an apocalyptic number.

It is an amenable number.

9867872 is an abundant number, since it is smaller than the sum of its proper divisors (12335344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9867872 is a wasteful number, since it uses less digits than its factorization.

9867872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44070 (or 44062 counting only the distinct ones).

The product of its digits is 338688, while the sum is 47.

The square root of 9867872 is about 3141.3169212927. The cubic root of 9867872 is about 214.4903884863.

The spelling of 9867872 in words is "nine million, eight hundred sixty-seven thousand, eight hundred seventy-two".